Precipitation annual maximum series (inches) Station ID: 34-4019 Station name: HELENA 1 SSE State: OK Latitude (decimal degrees): 36.5381 Longitude (decimal degrees): -98.2661 Elevation (feet): 1350 Duration: 1 day 08/22/1907 2.50 08/18/1910 2.55 08/04/1911 2.58 05/09/1912 1.20 07/25/1944 2.80 09/28/1945 3.56 08/26/1946 1.61 12/04/1947 2.90 11/01/1948 3.30 06/10/1949 3.45 07/29/1950 2.97 05/17/1951 3.84 04/22/1952 1.26 08/05/1953 1.71 10/06/1954 2.34 06/18/1955 2.66 12/23/1956 1.27 05/16/1957 4.00 06/25/1958 2.30 10/02/1959 3.26 05/29/1960 4.37 10/10/1961 2.35 06/09/1962 1.27 06/23/1963 5.45 11/16/1964 3.44 09/21/1965 2.26 08/10/1966 1.34 09/04/1967 3.75 08/29/1968 1.43 06/17/1969 2.00 04/18/1970 3.03 06/03/1971 3.56 07/19/1972 2.44 10/11/1973 3.41 11/03/1974 4.10 05/23/1975 1.48 07/02/1976 1.33 07/08/1977 3.16 05/28/1978 1.96 07/06/1979 4.11 05/16/1980 2.30 06/30/1981 3.27 05/17/1982 3.65 06/11/1983 1.94 04/08/1984 1.95 08/07/1985 1.71 10/03/1986 5.00 09/28/1987 3.40 03/03/1988 4.90 09/13/1989 3.10 03/07/1990 1.50 06/24/1991 1.93 11/25/1992 2.51 05/09/1993 3.00 11/20/1994 3.15 08/03/1995 3.34 06/17/1996 2.18 07/20/1997 6.55 10/31/1998 3.68 04/14/1999 2.96 05/26/2000 2.50 05/28/2001 1.63 10/03/2002 3.96 05/16/2003 2.56 04/24/2004 3.08 08/22/2005 2.81 06/24/2006 2.09 09/08/2007 2.25 09/12/2008 8.74 04/26/2009 7.12 05/25/2010 3.33 Duration: 2 days 08/21/1907 3.50 08/18/1910 2.75 08/04/1911 3.68 04/01/1912 1.50 07/25/1944 3.02 09/28/1945 4.12 10/06/1946 1.78 04/12/1947 3.58 11/01/1948 3.66 06/10/1949 3.72 07/28/1950 3.94 05/16/1951 5.23 04/21/1952 1.66 07/11/1953 2.77 05/24/1954 2.52 06/17/1955 4.49 12/23/1956 1.37 09/14/1957 4.31 06/25/1958 2.48 09/24/1959 5.86 05/28/1960 6.02 10/10/1961 2.53 06/08/1962 1.60 06/23/1963 5.87 11/16/1964 4.41 09/20/1965 3.88 06/15/1966 1.57 09/04/1967 4.11 08/17/1968 2.34 06/17/1969 2.50 04/17/1970 3.60 06/03/1971 3.83 07/18/1972 3.04 09/26/1973 3.69 11/02/1974 4.61 05/25/1975 1.66 05/12/1976 1.98 05/20/1977 4.03 05/27/1978 3.13 07/06/1979 4.43 05/15/1980 2.93 06/30/1981 3.52 05/16/1982 4.43 06/10/1983 2.51 04/08/1984 2.10 11/14/1985 2.03 10/03/1986 5.38 05/27/1987 4.04 03/02/1988 5.28 08/13/1989 3.93 02/21/1990 1.91 11/16/1991 2.44 11/24/1992 2.75 05/08/1993 4.02 10/17/1994 3.39 08/02/1995 3.98 09/15/1996 2.85 07/20/1997 7.05 10/31/1998 7.03 06/10/1999 3.29 07/21/2000 3.18 05/28/2001 1.86 10/03/2002 4.82 05/16/2003 3.01 04/23/2004 3.32 08/22/2005 4.09 06/23/2006 2.66 06/29/2007 3.07 09/12/2008 9.91 04/26/2009 7.67 05/19/2010 3.59 Duration: 3 days 08/20/1907 4.50 08/18/1910 2.77 08/03/1911 4.58 05/09/1912 1.78 07/25/1944 3.04 09/28/1945 4.99 10/06/1946 2.01 04/12/1947 3.65 11/01/1948 3.70 06/08/1949 3.75 07/28/1950 3.98 05/16/1951 5.94 11/24/1952 1.88 07/10/1953 2.85 05/23/1954 2.57 06/17/1955 5.04 12/23/1956 1.38 09/14/1957 4.35 06/25/1958 2.50 09/23/1959 6.22 05/28/1960 6.08 10/31/1961 2.69 06/07/1962 2.38 06/23/1963 5.93 11/16/1964 4.57 09/19/1965 4.33 06/15/1966 1.59 09/04/1967 4.21 08/17/1968 2.36 06/17/1969 2.52 04/17/1970 3.68 06/01/1971 3.87 07/18/1972 3.07 09/26/1973 4.07 11/02/1974 4.86 05/23/1975 2.51 06/30/1976 2.03 05/20/1977 4.07 05/26/1978 3.73 07/06/1979 4.47 06/17/1980 3.39 06/30/1981 3.56 05/16/1982 4.47 09/11/1983 2.60 12/14/1984 2.12 09/21/1985 2.49 10/02/1986 5.44 05/27/1987 4.74 03/03/1988 5.43 08/13/1989 3.97 02/21/1990 2.03 11/15/1991 2.59 08/02/1992 3.41 05/08/1993 4.38 10/16/1994 3.51 08/01/1995 5.13 09/14/1996 3.01 07/20/1997 7.12 10/31/1998 7.61 06/10/1999 4.02 07/21/2000 3.21 05/28/2001 2.49 10/03/2002 4.87 05/16/2003 3.04 04/22/2004 3.85 08/21/2005 4.15 06/22/2006 2.75 06/28/2007 4.25 09/12/2008 10.01 04/26/2009 7.74 07/04/2010 3.62 Duration: 4 days 08/20/1907 4.54 08/18/1910 2.80 08/03/1911 4.62 04/25/1912 2.08 07/25/1944 3.07 09/28/1945 5.04 10/05/1946 2.06 04/12/1947 3.94 10/30/1948 3.73 06/10/1949 6.02 07/26/1950 4.25 05/15/1951 6.00 04/19/1952 2.36 07/09/1953 3.16 05/23/1954 2.65 06/16/1955 5.09 12/20/1956 1.49 09/12/1957 4.42 06/22/1958 2.53 09/23/1959 6.28 05/28/1960 6.14 10/30/1961 3.39 06/07/1962 2.64 06/23/1963 5.98 11/16/1964 4.86 09/18/1965 5.73 08/07/1966 1.77 09/04/1967 4.53 08/15/1968 2.41 06/17/1969 2.55 04/17/1970 3.72 06/01/1971 3.91 07/18/1972 3.10 09/25/1973 4.17 10/31/1974 5.08 05/23/1975 3.14 05/10/1976 2.35 05/20/1977 4.25 05/26/1978 3.77 07/06/1979 4.51 06/17/1980 3.67 06/30/1981 3.79 05/16/1982 4.52 09/11/1983 2.77 12/13/1984 2.14 02/21/1985 2.56 09/30/1986 7.82 05/27/1987 4.79 03/02/1988 5.75 08/14/1989 4.20 02/21/1990 2.05 05/30/1991 2.77 08/02/1992 4.03 05/08/1993 4.81 10/15/1994 3.64 08/01/1995 5.58 06/16/1996 3.08 07/20/1997 7.19 10/31/1998 7.68 06/10/1999 4.06 07/21/2000 3.24 05/28/2001 2.51 10/03/2002 4.91 05/14/2003 3.07 04/22/2004 3.89 08/22/2005 4.57 06/22/2006 2.78 06/27/2007 4.54 09/12/2008 10.10 04/26/2009 7.82 05/17/2010 3.75 Duration: 7 days 08/20/1907 4.59 08/04/1910 3.03 07/16/1911 5.47 04/25/1912 2.10 09/27/1944 3.51 09/28/1945 5.09 10/05/1946 2.89 04/10/1947 4.43 07/11/1948 4.08 06/08/1949 6.25 07/28/1950 5.54 05/16/1951 8.22 04/18/1952 2.39 07/11/1953 4.71 05/19/1954 3.75 06/14/1955 5.56 05/31/1956 1.74 05/10/1957 5.38 06/19/1958 3.77 09/24/1959 6.49 05/25/1960 6.59 10/30/1961 3.42 06/03/1962 3.49 06/23/1963 6.04 11/15/1964 4.91 09/17/1965 6.12 04/18/1966 1.96 09/03/1967 4.60 08/12/1968 2.55 06/12/1969 3.54 04/17/1970 3.75 06/03/1971 4.55 07/18/1972 3.13 03/04/1973 4.41 10/28/1974 5.65 05/23/1975 4.27 05/22/1976 2.64 05/15/1977 5.40 05/26/1978 5.51 07/02/1979 4.56 06/16/1980 4.00 05/29/1981 4.43 05/12/1982 5.48 09/07/1983 3.68 03/19/1984 3.16 09/21/1985 2.93 09/29/1986 9.07 05/23/1987 6.00 03/02/1988 6.02 08/13/1989 5.64 02/22/1990 2.36 05/27/1991 3.78 11/19/1992 5.53 07/08/1993 5.59 05/24/1994 3.72 08/01/1995 6.32 09/14/1996 3.96 07/16/1997 7.26 10/28/1998 7.93 06/10/1999 4.10 05/21/2000 3.77 05/28/2001 2.54 10/19/2002 4.98 05/14/2003 3.11 04/20/2004 4.22 06/11/2005 5.86 06/22/2006 2.80 06/27/2007 4.77 09/09/2008 10.20 04/26/2009 7.90 05/19/2010 6.72 Duration: 10 days 08/20/1907 4.63 08/09/1910 3.46 07/12/1911 6.82 04/25/1912 2.54 07/17/1944 5.28 09/21/1945 5.93 10/05/1946 2.92 04/05/1947 6.42 07/11/1948 4.12 06/04/1949 7.80 07/20/1950 7.49 05/16/1951 8.42 04/13/1952 2.41 07/08/1953 5.12 05/17/1954 4.26 05/11/1955 5.83 05/27/1956 1.92 06/18/1957 6.74 06/16/1958 5.57 09/23/1959 10.49 05/28/1960 7.35 08/12/1961 3.46 06/01/1962 4.65 06/16/1963 7.12 11/15/1964 4.96 09/13/1965 6.20 08/10/1966 2.08 09/03/1967 4.68 08/11/1968 2.63 06/12/1969 3.58 04/17/1970 3.79 06/03/1971 5.01 07/12/1972 3.91 03/24/1973 4.92 10/25/1974 6.78 05/23/1975 4.43 05/22/1976 2.78 05/15/1977 5.62 05/28/1978 6.45 07/16/1979 4.60 06/16/1980 4.04 05/29/1981 4.48 05/12/1982 6.10 09/07/1983 4.40 03/19/1984 4.01 09/21/1985 4.30 09/24/1986 9.16 05/20/1987 6.73 03/02/1988 6.08 08/13/1989 5.81 02/21/1990 3.11 05/24/1991 4.88 11/19/1992 5.59 05/01/1993 8.24 05/24/1994 3.76 06/03/1995 6.69 07/30/1996 4.73 07/11/1997 7.34 10/24/1998 8.01 06/03/1999 4.52 03/16/2000 4.86 05/21/2001 2.60 10/19/2002 5.87 05/16/2003 3.59 04/20/2004 4.26 06/10/2005 5.92 06/17/2006 3.99 06/24/2007 4.89 09/04/2008 10.31 04/18/2009 8.37 05/16/2010 7.09 Duration: 20 days 07/10/1907 5.10 08/01/1910 5.94 07/17/1911 9.68 04/25/1912 4.40 07/10/1944 6.67 04/11/1945 6.34 10/05/1946 2.92 04/01/1947 7.14 06/27/1948 6.22 05/26/1949 8.40 07/13/1950 9.58 05/15/1951 8.85 04/04/1952 3.66 07/01/1953 5.70 05/08/1954 4.96 05/02/1955 7.17 06/25/1956 2.64 06/08/1957 10.10 06/16/1958 5.70 09/24/1959 11.88 07/04/1960 11.14 05/04/1961 6.02 05/29/1962 5.02 06/09/1963 7.34 11/04/1964 7.01 09/06/1965 7.01 07/22/1966 3.09 06/07/1967 6.03 08/11/1968 4.72 05/30/1969 5.13 03/30/1970 6.35 06/01/1971 5.52 07/02/1972 5.40 09/22/1973 8.05 08/09/1974 7.55 05/10/1975 6.98 05/10/1976 5.02 05/15/1977 7.38 05/18/1978 9.64 07/06/1979 8.51 05/15/1980 4.81 05/29/1981 5.67 05/12/1982 8.97 06/10/1983 5.16 03/23/1984 5.71 09/21/1985 6.03 09/24/1986 9.82 05/20/1987 6.92 03/02/1988 7.24 08/01/1989 8.11 02/21/1990 5.11 05/20/1991 6.33 11/19/1992 5.98 04/29/1993 10.99 10/03/1994 5.99 05/24/1995 10.19 07/24/1996 6.51 07/20/1997 9.59 10/17/1998 9.48 06/10/1999 6.04 10/14/2000 6.47 05/12/2001 3.87 10/03/2002 7.09 05/16/2003 4.05 04/09/2004 5.44 05/30/2005 6.41 06/13/2006 4.37 06/14/2007 8.21 08/30/2008 10.72 04/12/2009 10.04 05/10/2010 8.10 Duration: 30 days 07/26/1907 8.55 08/01/1910 5.94 07/07/1911 12.50 04/12/1912 4.79 07/01/1944 7.16 04/04/1945 6.77 04/01/1947 8.17 10/30/1948 6.83 05/16/1949 14.14 07/09/1950 10.46 05/16/1951 10.26 04/04/1952 4.09 07/07/1953 7.12 04/26/1954 7.32 05/09/1955 8.11 06/02/1957 11.85 06/16/1958 6.45 09/23/1959 12.24 05/18/1960 12.09 09/13/1961 6.89 05/29/1962 6.55 05/26/1963 8.89 10/25/1964 8.12 08/28/1965 7.33 07/21/1966 4.56 06/20/1967 7.32 08/11/1968 4.82 04/23/1969 6.09 03/28/1970 6.76 06/03/1971 7.12 06/20/1972 6.61 03/02/1973 10.10 10/07/1974 8.64 04/30/1975 8.27 04/28/1976 6.22 05/04/1977 8.29 05/21/1978 10.37 07/02/1979 10.06 04/24/1980 7.56 05/08/1981 8.63 05/06/1982 10.68 05/13/1983 6.31 03/12/1984 7.51 09/14/1985 7.37 09/24/1986 10.99 05/05/1987 10.64 03/03/1988 7.70 08/02/1989 8.63 02/15/1990 6.06 05/27/1991 7.18 11/19/1992 7.47 04/28/1993 12.54 10/03/1994 7.63 05/17/1995 10.57 07/10/1996 7.39 07/16/1997 10.08 10/17/1998 9.83 05/17/1999 8.32 02/23/2000 7.69 05/03/2001 4.83 10/03/2002 11.08 04/19/2003 5.33 10/26/2004 6.59 06/10/2005 8.57 05/30/2006 6.48 06/14/2007 10.38 08/15/2008 10.99 03/28/2009 11.42 05/19/2010 10.76 Duration: 45 days 07/10/1907 10.20 07/12/1910 6.24 06/26/1911 13.55 04/01/1912 6.37 07/17/1944 9.78 03/14/1945 8.47 08/26/1946 4.68 04/05/1947 11.70 06/16/1948 8.14 05/05/1949 16.40 07/18/1950 12.07 05/17/1951 15.74 03/10/1952 5.31 06/23/1953 7.93 04/22/1954 8.51 05/09/1955 13.93 05/31/1956 4.38 05/16/1957 17.08 06/16/1958 7.54 09/23/1959 13.16 05/28/1960 15.51 05/04/1961 9.32 05/21/1962 6.89 06/16/1963 9.65 10/25/1964 8.61 08/15/1965 10.75 07/21/1966 5.31 06/07/1967 10.24 05/07/1968 6.34 05/04/1969 8.89 03/16/1970 8.25 09/17/1971 8.00 06/23/1972 7.72 03/08/1973 12.78 09/20/1974 9.71 04/28/1975 10.77 04/13/1976 8.79 04/19/1977 9.80 05/01/1978 11.92 06/24/1979 11.24 05/15/1980 8.83 05/29/1981 10.21 05/12/1982 13.49 09/07/1983 8.71 03/17/1984 9.49 09/09/1985 8.37 09/24/1986 13.80 05/20/1987 11.54 03/02/1988 8.88 08/01/1989 13.12 02/15/1990 6.77 05/20/1991 9.75 06/25/1992 8.81 04/28/1993 14.41 10/08/1994 8.77 04/29/1995 13.29 07/01/1996 8.93 07/11/1997 12.96 09/22/1998 14.65 05/17/1999 10.91 05/21/2000 9.15 05/03/2001 5.13 09/19/2002 11.90 05/08/2003 6.57 10/11/2004 8.44 05/24/2005 9.76 05/30/2006 7.01 05/30/2007 12.75 09/09/2008 14.36 03/24/2009 12.95 05/10/2010 12.13 Duration: 60 days 06/26/1907 11.80 06/23/1910 6.49 06/26/1911 14.80 04/25/1912 7.82 07/10/1944 11.17 03/14/1945 9.38 08/12/1946 5.85 04/01/1947 14.07 06/07/1948 8.60 04/27/1949 17.56 07/02/1950 13.39 05/16/1951 19.41 02/24/1952 7.16 06/07/1953 8.92 04/22/1954 9.79 05/09/1955 14.97 05/26/1956 5.54 05/03/1957 20.92 06/07/1958 9.26 08/16/1959 14.46 05/25/1960 22.40 08/12/1961 10.41 06/03/1962 9.01 05/31/1963 11.32 05/06/1964 10.27 07/28/1965 11.30 04/18/1966 6.62 05/21/1967 11.34 05/07/1968 7.23 04/23/1969 11.31 03/16/1970 8.68 06/01/1971 8.33 07/02/1972 9.36 03/04/1973 15.84 08/09/1974 10.84 04/14/1975 11.22 04/13/1976 8.93 05/15/1977 12.21 05/01/1978 13.93 07/06/1979 13.49 04/24/1980 12.40 05/08/1981 14.28 05/12/1982 15.72 05/11/1983 9.08 03/12/1984 10.32 08/13/1985 10.24 08/05/1986 14.81 05/05/1987 15.26 03/02/1988 12.26 08/01/1989 13.12 01/17/1990 8.14 04/26/1991 10.66 06/15/1992 10.50 04/28/1993 15.37 09/22/1994 11.12 04/18/1995 16.24 07/30/1996 13.32 06/24/1997 14.84 09/14/1998 15.08 04/14/1999 14.37 05/25/2000 12.38 05/03/2001 5.96 09/14/2002 12.60 04/19/2003 8.01 03/03/2004 9.57 06/10/2005 10.63 04/29/2006 8.35 05/02/2007 14.26 08/30/2008 15.12 03/24/2009 13.51 05/10/2010 15.67